Expansion shield or anchor



Patented Aug. 8, 1933 1,921,794 EXPANSION SHIELD R ANCHOR Charles C. Tomkinson, Plainfield, N. J., assignor to J. Edward Ogden Company, 1110., East Orange, N. J., a Corporation of New Jersey Application November 14, 1931 Serial No. 574,953

6 Claims. '(01. sit-2.4)

This invention relates to improvements in expansion shields or anchors of the character used for obtaining anchorage in walls of brick, stone or cementitious material not adapted to receive and retain a bolt, nail or like member.

The invention has for its salient object to provide a simple and inexpensive expansion shield that will firmly grip the material within which it is expanded.

Another object of the invention is to provide an expansion shield adapted for expansion by a driven expanding member.

Further objects of the invention will appear from the following specification, taken in connecticn with the drawing which forms apart of this application, and in which Fig. l is a plan view of a blank used to form an expansion shield;

Fig. 2 is a sectional elevation of the shield constructedin accordance with the invention;

Fig. 3 is an end elevation of the outer end of the shield shown in Fig. 2; i Fig. 4 is a sectional elevation illustrating the shield as mounted in a wall opening;

Fig. 5 is a view similar to Fig. 4 but showing the shield expanded in the wall opening; and

Fig. 6 is a sectional elevation illustrating a method by means of which the insert of ductile material or metal can be placed in the shield.

The invention briefly, described consists of an e:.pansion shield formed of relatively hard metal and having an insert in the inner end thereof 1 ing laterally expansible portions 11 and 12. The

outer end of the shield is provided with flanges 13 and 14.

The blank 10 base central opening 15 and longitudinally extending openings or slots 16 and 1'7. i

The shield just described is formed of relatively hard metal, preferably sheet metal, and

has an insert 20 of ductile or deformable material, such soft metal, mounted therein at the inner end thereof.

is capable of modification and that changes in departing from the spirit-or scope of the invenformed as a cap having its open end extending to manner shown in Fig. 6 by pouring the ductile metal through the opening 15, a, core 21 being inserted inthe shield and having a tapered end 22 for forming the tapered wall of the insert 20. The ductile metal also fiows into the longitudinal slots 15 and 17 and fills the opening 15. V

The shield is inserted in the wall opening in the usual manner and a driven expanding member, such as a nail 25, is driven into the shield and forces the shield sections 11' and 12 laterally into gripping engagement with the wall-opening and furthermore forces the ductile material or metal of the insert 20 through the slots 16 and 1''] into engagement with thewall opening. The inner end of the nail, as shown in Fig. 5 may. project through the opening 15.

vention has been particularly. shown and described, it will be-under'stood that the invention the constructionand in the arrangement of the various'cooperating parts may be made without tion, as expressed in the following claims.

What I claim is:

1. An expansion shield comprising a substantially cylindrical member formed of relatively hard metal, and a cup of ductile material seated in and closing the inner end of said shieldand having its open end facing-outwardly. I 2. An expansion shield comprising a substan-. tially cylindrical member formed of relatively hard metal, a cup of ductile material seated in and closing the inner end of said shield and 7 having its open end facingoutwardly, the wall of said cup being longitudinally. tapered.

3. An. expansionshield comprising a' substanially cylindrical member formed of relatively hard metal, and a cup of ductile material seated in and closing the inner end of said shield and having its-open end facing outwardly/the wall of the cup being thickerat the inner end thereof than at the outer end thereof. 7

4. An expansion shield comprising a substan'-* tially cylindrical member formed of relatively hard metal, and a cup of ductile material seated in the inner end of said shield and having its open end facing outwardly, said shield having an opening at the inner. end thereof and said ductile material filling said opening.

5. An expansion shield comprising a substantially cylindrical, one-piece member formed of relatively hard metal, and a cup of ductile material seated in and closing the inner end of said shield and having its open end facing outwardly. 

